"""
对 Word 中数据库设计表构建图谱

字段名判断依据：1、字段名称不为保留字 2、字母和下划线 3、驼峰命名 4、注意数字
"""
import re
import logging

import docx
from docx import Document
from docx.oxml.table import CT_Tbl
from docx.oxml.text.paragraph import CT_P
from docx.table import _Cell, Table
from docx.text.paragraph import Paragraph

import uuid
import pandas as pd

import networkx as nx
import matplotlib.pyplot as plt

from py2neo import Node, Graph, Relationship
graph = Graph('bolt://192.168.1.150:7687/', user='neo4j', password='password', name="neo4j")
graph.delete_all()


coltypes = {'int', 'bigint', 'float', 'double', 'decimal', 'date', 'datetime', 'char', 'varchar', 'text', 'longtext', 'blob', 'bool', 'boolean'}

coldict = {'名称': 'colname', '字段名': 'colname', 'Field Name': 'colname', '关联字段': 'alias', 'Alias': 'alias'}


class LoggerHandler(logging.Logger):
    def __init__(self, name: str, console_handler_level: str = logging.INFO, fmt: str = '%(levelname)s: %(asctime)s: %(name)s: %(filename)s: %(lineno)d: %(funcName)s: %(message)s'):
        super().__init__(name)
        self.setLevel(logging.INFO)
        self.fmt = logging.Formatter(fmt)
        self.set_console_handler(console_handler_level)

    def set_console_handler(self, console_handler_level: str = logging.INFO) -> None:
        ch = logging.StreamHandler()
        ch.setLevel(console_handler_level)
        ch.setFormatter(self.fmt)
        self.addHandler(ch)


logger = LoggerHandler(__name__, fmt='%(levelname)s: %(asctime)s: %(lineno)d: %(funcName)s: %(message)s')


class Word:
    def __init__(self, path: str, draw: bool = False) -> None:
        self.draw = draw
        self.doc = Document(path)
        if draw:
            self.G = nx.Graph()

    def iter_block_item(self, parent):
        if isinstance(parent, docx.document.Document):
            parent_elm = parent.element.body
        elif isinstance(parent, _Cell):
            parent_elm = parent._tc
        else:
            raise ValueError("something error")

        for child in parent_elm.iterchildren():
            if isinstance(child, CT_P):
                yield Paragraph(child, parent)
            elif isinstance(child, CT_Tbl):
                yield Table(child, parent)

    def parse(self) -> tuple:
        for block in self.iter_block_item(self.doc):
            if block.style.name == 'Heading 1' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Heading 2' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Heading 3' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Heading 4' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Heading 5' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Heading 6' and block.text:
                yield ('Heading', block.text)
            elif block.style.name == 'Normal' and block.text:
                yield ('Normal', block.text)
            elif block.style.name == 'Table Grid':
                tables = []
                for row in block.rows:
                    rows = []
                    for cell in row.cells:
                        for paragraph in cell.paragraphs:
                            rows.append(paragraph.text.strip())
                    tables.append(rows)
                yield ('Table', tables)
            elif block.style.name == 'Normal Table':
                tables = []
                for row in block.rows:
                    rows = []
                    for cell in row.cells:
                        for paragraph in cell.paragraphs:
                            rows.append(paragraph.text.strip())
                    tables.append(rows)
                yield ('Table', tables)

    def predict(self):
        for r in self.parse():
            if r[0] in ['Heading', 'Normal']:
                tablename = r[1]
                logger.debug(tablename)
            if r[0] == 'Table':
                # 判断表是否为需要解析的表
                if any(coltypes & {i.lower() for i in r[1][1]}):
                    # 数据库表名解析
                    if re.search("[a-zA-Z_]+", tablename):
                        tablename = re.search("[a-zA-Z_]+", tablename).group()
                    logger.info(f"得到数据库表，表名：{tablename}")

                    df = pd.DataFrame(r[1])
                    df.columns = df.values.tolist()[0]
                    df.drop([0], inplace=True)

                    if self.draw:
                        self.G.add_node(tablename)

                        nodelist = [
                            (uuid.uuid1(), item) for item in df.to_dict(orient ='records')
                        ]
                        self.G.add_nodes_from(nodelist)

                        edgelist = [
                            (tablename, node[0]) for node in nodelist
                        ]
                        self.G.add_edges_from(edgelist)

                    # 创建表节点
                    start_node = Node("表", name=tablename)
                    graph.merge(start_node, "表", "name")

                    # 表字段修正
                    df.rename(columns=coldict, inplace=True)
                    # 别名字段必填
                    if 'alias' not in df.columns:
                        logger.warning(f"未找到Alias字段，当前字段包含：{df.columns}")
                        df['alias'] = ''

                    # 迭代表字段
                    for item in df.to_dict(orient ='records'):

                        # 确保属性插入正常
                        for key in set(item.keys()):
                            if not isinstance(key, str):
                                del item[key]
                        
                        # 字段名设置合并条件
                        colname = item['colname']
                        if not item['alias']:
                            item['alias'] = tablename + '_' + colname

                        # 创建字段节点
                        end_node = Node("字段", name=colname, **item)
                        graph.merge(end_node, "字段", "alias")

                        # 创建表字段关系
                        # relation = Relationship(start_node, 'has', end_node)
                        HAS = Relationship.type("has")
                        graph.merge(HAS(start_node, end_node))

    def draw(self):
        if self.draw:
            nx.draw(self.G, with_labels = True)
            plt.show()
        else:
            return "Draw is not enabled"


if __name__ == '__main__':
    path = '''数据库设计文档.docx'''
    path = '''数据库设计(1).docx'''
    path = '''数据库设计(2).docx'''
    # path = '''国家电投人才猎头智能人才库项目-数据库设计说明书.docx'''
    # path = '''FJS-OCR 富士通识别平台 数据库设计说明书.docx'''
    # path = '''中国跳水队智能辅助教练系统-国际比赛数据 数据库设计说明书.docx'''

    word = Word(path)
    word.predict()